Car buffing device.



Patented Feb. 13, 1917.

WT/VESSES mt mwms PETERS ca. Pnumuma. wAsnmu-mm 0 cv WILLIAM E. WINE, 0F TOLEDO, OHIO;

CAR BUFFIN Gr DEVICE.

Specification of Letters Patent.

Patented Feb. 13, 1917.

Application filed May 22, 1916. Serial No. 99,172.

To all whom it may concern:

Be it known that 1, WILLIAM E. WINE, a citizen of the United States, residing at Toledo, in the county of Lucas and the State of Ohio, having invented new and useful Improvements in Car Buffing Devices, of which the following is a specification, reference being had to the accompanying drawings forming a part thereof.

y invention relates to improvements in bufiing devices intended for application to the end sills of freight cars for supplementing the bufling action of the draft gears.

With the rapidly increasing size of locomotives and tractive force thereof, and the increase size and lengths of trains to be hauled thereby, it has been found that modern draft gears have not been sufficiently strong or of a capacity to absorb a sufficient amount of the bufiing force to properly protect a car structure.

Therefore the object of my invention is to so construct a bufling device that it will cooperate with the draft gear in absorbing additional buffing strains.

A further object of my invention is to so construct a bufiing device that it will have a maximum strain absorbing capacity within a very narrow space.

vVith these and other objects hereinafter explained in view, the construction and combination of elements hereinafter described and claimed.

In the accompanying drawings which illustrate the preferred embodiment of my invention: Figure l is a sectional plan view on line l1 of Fig. 2. Fig. 2 is the preferred front elevation of same. Fig. 3 is a section on line 33. Fig. 4 shows a modification of the arrangement shown on Fig. 1. Fig. 5 shows still another modification of the arrangement shown in Fig. 1.

Similar characters designate similar parts throughout the several figures of the drawings.

Referring now to the parts by number: the housing 1 is provided with a chamber 2 in which are located the buffer block 3, spring 4 and cam blocks 5. The bufler block 3 is provided with ends 6 which engage flanges 7 of the housing 1 for retaining the buffer block within the chamber 2. The housing 1 is provided with seats 8 which form a bearing for spring 4. The cams 5 my invention consists in which are interposed between spring 4 and buffer block 3 each have a bearing at their outer ends 9 and a bearing on spring a at their inner ends 10. The buffer block 3 bears directly on cams 5 at points 11 and 11 The buffer block 3 on being moved inwardly during action shifts its points of bearing on cams 5 due to the outer curved surface of the cam blocks thus causing the strain on spring 4 near its center to continually diminish throughout its entire deflection. It will thus be seen that all strains will be transmitted in two ways to bearings 8 of the housing 1, first through cam block 5 bearing at 9 and spring 4, second through block 5 bearing at 10 and spring 4.

Inasmuch as spring 4 is flexible and can be deflected at points 10 of the cam blocks 5, any strain applied to buffer block 3 will cause the ends 10 of cam blocks 5 to be moved inwardly thus changing the points of contact between buffer block 3 and cams 5 which causes points 9 ofcam blocks 5 to assume a greater proportion of the bufling strain.

It will further be noted that this arrangement of bufier block, cam blocks and spring on being operated will gradually require greater and greater force to completely deflect same.

Referring vided with a single bearing 8 spring 4* is seated. This figure also shows the cam blocks 5 oppositely arranged from that shown in Fig. 1 but the operation of same is identical, this figure being only to show a modified arrangement of the various parts. Fig. 5 shows an arrangement just the reverse from Fig. 4 wherein the cam blocks 5? have hearings on the rear wall of the housing 1? instead of the buffer block. The buffer block 3 bears directly on the spring membert thus corresponding to the bearing of 8 in Fig. 4. he action of the modification shown inFig. 5 will also produce the same results as that shown in Fig. 1.

It will of course be understood that I do not desire to be limited to the specific construction shown on the drawings as it is obvious that changes in construction and arrangement may be made without departing from the spirit of the invention.

Having thus described my invention,- I aim in the appended claims to cover all modto Fig. l, the housing 1" is proon which the by Letters Patent of the United States 1s:

1. In a buifing device for cars, the combination of a housing, a plate spring member,

a buffer block and a cam member provided with bearings on movable and stationary portions of said spring member and also with a varying bearing on another member.

2. In a buiiing device for cars, the combination of a housing, a plate spring member, a butler block, and a cam member cooperating with said spring member, said cam member being provided on one side with hearings on movable and stationary portions of said spring member, the opposite side of said cam member being provided with a varying bearing on another member.

3. In a bufiing device for cars, the combination of a housing, a plate spring member, buffer block, and a cam member having movable and stationary bearings on movable and stationary portions respectively of said spring member, said cam member also having a varying bearing contact with said bufl'er block. t

4. In a bufling device for cars, the combination of a housing, a plate spring member, a buffer block, and a cam member interposed between said buffer block and said spring member, said cam member having a bearing at each end thereof on said spring member, one of said bearings being on a stationary portion and another on a movable portion of said spring member, said cam member also having a rolling bearing contact with said buii'er block.

5. In a buffing device for cars, the combination of a housing, a plate spring member, a bufier block, and cam members, said cam members being provided on one side thereof with bearings which cooperate with stationary and movable portions of said spring member, the opposite side of said cam members being provided with curved walls which provide rolling bearings on another member.

6. In a bufiing device for cars, the combination of a housing, a plate spring member, a buiier block, and cam members interposed between said buffer block and said spring member, each of said cam members being provided with bearings at their opposite ends on stationary and movable portions of said spring member, said cam members being also provided with curved outer walls providing rolling bearings on said buiier block.

7. In a bufling device for cars, the combination of a housing, a plate spring member, and a cam member provided with bearings on movable and stationary portions of said spring member.

8. In a bailing device, the combination of a housing and buiiing means, said buiiing means comprising a buffer block, a plate spring member and a cam member, said cam member being provided with bearings on movable and stationary portions of said spring member and a varying bearing con tact with another member whereby there is a changing ratio in pressure exerted on the movable and stationary portions of said spring member. 7

9. In a buiiing device, the combination of a housing and buiiing means, said buffing means comprising a butter block, a plate spring member and a cam member interposed bet veen said spring member and said buffer block, said cam member being provided with hearings on one side thereof communicating with stationary and movable portions of said spring member, the opposite side of said cam member being provided with a rolling bearing on. said buii'er block whereby there is a changing ratio in pressure exerted on the stationary and movable portions of said spring member throughout the total movement of said bufier block.

10. In a buffing device, the combination of a housing having a seat therein, a plate spring member engaging said seat in the housing, a buffer block, and a, cam member interposed between said buiier block and said spring member, said cam member being provided with a movable bearing and a bearing on said spring member substantially in line with said seat 1n the housing, said .cam member also being provided with a curved wall forming a rolling bearing for said buffer block whereby there is a varying ratio in pressure exerted on the movable and stationary portions of said spring member.

11. In a bufiing device, the combination of a housing having seats at the opposite sides thereof, a plate spring member engaging said seats at each end thereof, a buffer block, and cam members having bearings near the center and ends of said spring member, said cam members also being provided with curved walls which form rolling bearings for said buffer block whereby a varying ratio in pressure is exerted on the center and ends of said spring member through the total movement of said buffer block. 7 This specification signed and witnessed this 16th day of May, 1916.

r V. E. WINE.

In the presence of L. J. TILLMAN, R. F. TILLMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

